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DS1775, DS1775R
Tiny Digital Thermometer and Thermostat


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Description
FULL DATA SHEET (PDF, 256kB)
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The DS1775 digital thermometer and thermostat is offered in a tiny 5-pin SOT-23 package and provides ±2°C accuracy over a -10°C to +85°C range. Thermometer data is read out over a 2-wire serial bus in 2's complement format with 9 to 12 bits of resolution (user-programmable). The DS1775 is available with eight different hard-wired addresses, allowing up to eight DS1775 devices to operate on the same bus. The eight versions of the DS1775 are:

Part Number Address
DS1775R 000
DS1775R1 001
DS1775R2 010
DS1775R3 010
DS1775R4 100
DS1775R5 101
DS1775R6 110
DS1775R7 111

The DS1775 offers thermostatic functionality with over-temperature (TOS) and under-temperature (THYST) user-programmable trip-points stored in on-chip SRAM. The two trip-points provide programmable thermostat hysteresis: the thermostat output is asserted when the measured temperature exceeds TOS and it remains active until the temperature falls below THYST.

The DS1775 is functionally compatible with the DS75 and the LM75.

Key Features   Applications/Uses
  • Tiny 5-pin SOT-23 package
  • ±2°C accuracy from -10°C to +85°C
  • Measures temperatures from -55°C to +125°C (-67°F to +257°F)
  • 9- to 12-bit user-configurable resolution
  • Dedicated thermostatic logic output
  • Thermostatic settings are user-programmable
  • Data is transferred over 2-wire/SMBus interface
  • Eight address versions allow up to eight DS1775 to operate on one bus
  • Functionally compatible with the DS75 and LM75
  • 2.7V to 5.5V supply range

 
  • Computer Graphics Systems
  • Industrial Instruments
  • Notebook Computers
  • Portable Terminals
  • Storage Area Networks (SANs)

    Key Specifications:   Temperature Sensors
    Part Number Sensor Type Interface Accuracy (±°C) Parasite Power Temperature Threshold Temperature Resolution (Bits) Multi-Droppable Price**
    DS1775  Local 2-Wire/SMBus 2 No Programmable 10
    11
    12
    9
    Yes $0.88 @ 1k
    See All Temperature Sensors (97)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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    2002-08-09
    This page last modified: 2008-05-29



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